Hi Tom,
I think that there are a few issues, but basically I'd say that, for photorealistic rendering of large files, your computer needs more hardware resources
- Your video card is integrated => usually, these cards don't get a good performance for rendering purposes. Anyway, I'd suggest that you update the video card driver (I believe that they released an update last week)
- Large files need more memory, probably 8Mb is not enough.
Try these steps
1 - Update all your drivers.
2 - Test a small file (1,000 Kb or less, for example) => try to render and see if it crashes.
3 - Go to => Edit => Preferences => System => Graphics => Hardware Acceleration. By default, the level of the accelerations is "Full" => Move the control to the center and see if the problem is solved (you need to close / open the program so the change takes effect) . If not, move the control to the left (None) => check if the problem is solved.
Some tips => always, the best option is the rational use of resources.
1 - Develop the constructive aspects of house first, (walls, roof, floors, doors, windows, etc.) and add the furniture at the end.
2 - Develop the topography with a low quality definition.
3 - To use fewer resources, use the Render Options: hide the unnecessary elements and reduce the quality. These options can be changed later.
4 - Working in Clear View mode increases the speed.
5 - If you are working in the interior of the house, deactivate the topography.
6 - If you are working in the exterior of the house, deactivate the interior furniture and interior lights.
Hope this helps.